Gym Badge #XY210 from XY Black Star Promos is a reverse holo promo card that currently sells for about $17.79 ungraded, with graded copies ranging from $6.63 at grade 7 to $130 at grade 10. A grade 10 copy sells for around $130, about 7.3× the $17.79 raw price, so high-grade copies are worth grading.